Machine for covering wires



., AND FOR MAKING (No Model.)

Elm w wG mmw W W 7 W WT M/////// \M r N m m ii UNITED STATES PATENTOFFICE.

VERNON ROYLE AND JOHN ROYLE, JR, OF PATERSON, NEIV JERSEY.

MACHINE FOR COVERING WIRES, CABLES, the, AND FOR MAKING TUBING AND CORD.

SPECIFICATION forming part of Letters Patent No. 457,482, dated August11, 1891.

Application filed January 10, 1891. Serial No. 377,333. (No model.) I

To all whom it may concern:

Be it known that we, VERNON ROYLE and JOHN BOYLE, Jr., both of Paterson,in the county of Passaic and State of New Jersey, have invented a newand useful Improvement in Machines for Covering Wires, Cables, &c., andfor Making Tubing and Cord, of which the'following is a specification.

Our invention relates to an improvement in machines for covering wires,cables, &c., and for'making tubing and cord in which material in a softor plastic state is forced continuously around a core within a die.

The object of our present invention is to so construct andlocate thecore, core-supporting bridge, and die as to form a tight joint be tweenthe core-bridge and its seat and permit the ready adjustment and removalof the die and core and at the same time to locate the die well withinthe surrounding jacket.

A practical embodiment of our inventionis represented in theaccompanying drawings, in which Figure 1 represents a longitudinalsection through the press-head and portion of the jacketed cylinder inproximity thereto, showing the core, core-bridge, and die in positionwithin the press-head, and Fig. 2 is an end View of the press-head.

As our present invention relates only to the structure and arrangementof the core, corebridge, and die relatively to the press-head, the otherparts of the machine are not herein shown and maybe of anysuitablestructuresuch, for example, as that shown in Letters Patent No. 325,363,granted to us September 1 1885.

A represents the press-head abutting at its inner end against thepressure-screw cylinder B and the trunk or jacket 0, which surrounds thecylinder B. The press-head A is provided with a bore a,extendinglongitudinally therethrough and forming a prolongation of thebore within the pressure-screw cylinder B. The bore (L is enlarged fromits outer end inwardly to receive the core-bridge D and reducing-pieceE, forming shoulders at at the inner end of the enlarged portion,against which the rim (Z of the core-bridge is intended to abut. Thecore-bridge D is formed of such sizes as to fit snugly within theenlarged portion of the bore a and the rear side of its rim (Z is fittedby a tight joint to the face of the shoulder ct. The reducing-piece Ehereinbefore referred to is also fitted snugly within the enlargedportion of the bore a, and is provided with an interior bore 6, which atits-inner end registers with the opening through the core-bridge D, butgradually contracts toward its outer end for the'purpose of directingthe material being forced therethrough into proximity to the core at thepoint where it enters the mouth of the die.

The core is denoted by F and is screwed into the center portion of thecore-bridge D, as shown at f. Its free end f projects outwardly withinthe opening in the'die G. The die G is of less diameter than theenlarged portion of the bore a, so as to permit of its being adjustedlaterally with respect to the fixed core F. The means by which the saiddie G is adjusted consist in the present instance of screws H,preferably four, located at equal intervals along its periphery andseated in threaded sockets h, radiating from the longitudinal axis ofthe press-head. The

joints between the v reducing-piece and corebridge and between the dieand reducingpiece are intended to be fitted with precision and are kepttightly closed, and the corebridge, reducing-piece, and die held inposition within the press-head against outward displacement by means ofa clamp-nut I, which is arranged to screw intoa stillfurther enlargedportion of the bore a at its outer end. The nut I is provided with agraduallyexpanding opening 2', leading outwardly from the bore in thedie.

The press-head A is provided with a chamber a forming an extension of orcommunication with the trunk or'jacket c for the purpose of admittingsteam into proximity to the point where the material is forced aroundthe core through the die, so that in cases where it is desired to keepthe material from becoming chilled it may be accomplished by theintroduction of steam in such chamber at the desired temperature.

It will be observed that by the above construction the core'bridge withthe core fixed thereto is seated snugly and firmly within thepress-head, the material is directed by a gradnally-contracted annularspace toward the mouth of the die, and the die, reducing-piece, andcore-bridge are held firmly in position within the press-head and thejoints tightly closed by means of the clamp-nut I.

To adjust the die laterally the clamp-n ut I may be slightly loosenedand the screws H manipulated to move it into the desired adjustment. Toremove the several parts for the purpose of interchanging them forothers or for cleaning, the clamp-nut I may be removed and the screws Hturned outwardly, leaving a free passage for sliding the several partsout.

What we claim is 1. The combination, with the pressurescrew cylinder,the fixed core-bridge seated across the opening at the mouth of saidcylinder, and the core fixed to the core-bridge and extending inalignment with the longitudinal axis of the cylinder, of thelaterallyadjustable die, substantially as set forth.

2. The combination, with the core-bridge and the die and means forsecuring them in position, of the reducing-piece interposed between thecore-bridge and die, substantially as set forth.

3. The combination, with the press-head provided with an enlargedboreextending from its outward end inwardly and having an abutment atthe inner end of said bore, of a core and a die seated within said boreand a clamping device for holding them snugly in position therein,substantially as set forth.

4. The combination, with the press-head provided with a bore extendingfrom its outer end inwardly, of a core-bridge and core, areducing-piece, and a die located Within the bore, a clamping deviceseated within the outer end of the bore and adapted to hold the saidparts against displacement longitudinally of the bore, and means foradjusting the die laterally within the bore, substantially as set forth.

VERNON ROYLE. JOHN BOYLE, JR.

WVitnesses:

C. F. MAGER, SIDNEY FARRAR.

